How many days does it typically take to form a new habit?

The idea that it takes around 21 days to form a new habit originates from research in the 1960s by Dr. Maxwell Maltz, a plastic surgeon who observed that it took approximately that long for patients to adjust to changes in their appearance. While this timeframe has become a popular rule of thumb, more recent studies suggest that habit formation can actually take longer and varies greatly depending on the complexity of the habit and individual differences.

However, the choice of 21 days is significant because it represents a starting point for many individuals looking to instill a behavior change. During this period, actions are repeatedly performed, which helps to establish a routine and solidify the association between the behavior and the context in which it's performed. By this time, individuals often begin to notice the benefits of the new behavior, which further reinforces its continuance.

Although some may argue for longer durations for habit formation, choosing 21 days reflects a well-known concept that can motivate individuals to commit to making changes in their behavior over a manageable timeframe.